Delete ChromeOS code

gyp/common.gypi

Index: gyp/common.gypi
diff --git a/gyp/common.gypi b/gyp/common.gypi
index ae6dd628cc2fb268e0aad9066b940f984a3bbf19..5aaa58ff0eee5256351492e38f2882bb308ec4f8 100644
--- a/gyp/common.gypi
+++ b/gyp/common.gypi
@@ -26,8 +26,7 @@
     # situations, like building for iOS on a Mac.
     'variables': {
       'conditions': [
-        [ 'skia_os != OS and not ((skia_os == "ios" and OS == "mac") or \
-                                  (skia_os == "chromeos" and OS == "linux"))', {
+        [ 'skia_os != OS and not (skia_os == "ios" and OS == "mac")', {
           'error': '<!(Cannot build with skia_os=<(skia_os) on OS=<(OS))',
         }],
         [ 'skia_mesa and skia_os not in ["mac", "linux"]', {
@@ -36,9 +35,6 @@
         [ 'skia_angle and not (skia_os == "win" or skia_os == "linux" or skia_os == "mac")', {
           'error': '<!(skia_angle=1 only supported with skia_os="win" or skia_os="linux" or skia_os="mac".)',
         }],
-        [ 'skia_os == "chromeos" and OS != "linux"', {
-          'error': '<!(Skia ChromeOS build is only supported on Linux.)',
-        }],
       ],
     },
     'includes': [